Since mnt_flags was upgraded to 64bits there has been a quirk in
"struct export_args", since it hold a copy of mnt_flags
in ex_flags, which is an "int" (32bits).
This happens to currently work, since all the flag bits used in ex_flags are
defined in the low order 32bits. However, new export flags cannot be defined.
Also, ex_anon is a "struct xucred", which limits it to 16 additional groups.
This patch revises "struct export_args" to make ex_flags 64bits and replaces
ex_anon with ex_uid, ex_ngroups and ex_groups (which points to a
groups list, so it can be malloc'd up to NGROUPS in size.
This requires that the VFS_CHECKEXP() arguments change, so I also modified the
last "secflavors" argument to be an array pointer, so that the
secflavors could be copied in VFS_CHECKEXP() while the export entry is locked.
(Without this patch VFS_CHECKEXP() returns a pointer to the secflavors
array and then it is used after being unlocked, which is potentially
a problem if the exports entry is changed.
In practice this does not occur when mountd is run with "-S",
but I think it is worth fixing.)
This patch also deleted the vfs_oexport_conv() function, since
do_mount_update() does the conversion, as required by the old vfs_cmount()
calls.
Reviewed by: kib, freqlabs
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D25088
In the 11n world, most NICs did A-MPDU receive/transmit offloading but
not A-MSDU offloading. So, the net80211 A-MPDU receive path would just
receive MPDUs, do the reordering bit, pass it up to the rest of
net80211 for crypto decap and then do A-MSDU decap before throwing ethernet
frames up to the rest of the system.
However 11ac and 11ax NICs are increasingly doing A-MSDU offload (and
newer 11ax stuff does socket offload, but hey I don't want to scare people
JUST yet) - so although A-MPDU reordering may be done in the OS, A-MSDUs
look like a normal MPDU. This means that all the MSDUs are actually
faked into a set of MPDUs with matching 802.11 header - the sequence number,
QoS header and any encryption verification bits (like IV) are just copied.
This shows up as MASSIVE packet loss in net80211, cause after the first MPDU
we just toss the rest.
(And don't get me started about ethernet decap with A-MPDU host reordering;
we'll have to cross that bridge for later 11ac and 11ax bits too.)
Anyway, this work changes each A-MPDU reorder slot into an mbufq.
The mbufq is treated as a whole set of frames to pass up to the stack
and reordered/de-duped as a group. The last frame in the reorder list
is checked to see if it's an A-MSDU final frame so any duplicates are
correctly tossed rather than double-received. Other than that, the
rest of the logic is unchanged.
The previous commit did a small subset of this - if there wasn't any reordering
going on then it'd accept the A-MSDUs. This is the rest of the needed work.
This is a no-op for 11n NICs doing A-MPDU reordering but needing software
A-MSDU decap - they aren't tagged as A-MSDU and so any subsequent
frames added to the reorder slot are tossed.
Tested:
* QCA9880 (ath10k/athp) - STA/AP mode;
* RT3593 (if_rsu) - 11n STA+DWDS mode (I'm committing through it rn);
* QCA9380 (if_ath) - STA/AP mode.
This is a new, optional (for now!) method that drivers can use to separate
node allocation and node initialisation. Right now they're the same, and
drivers that need to do node allocation via firmware commands need to sleep
and thus they need to defer node allocation into an internal taskqueue.
Right now they're just separate but not deferred. Later on if I get the time
we'll start deferring the node and key related operations but that requires
making a bunch of other stuff (notably things that generate frames!) also
async/deferred.
Tested:
* RT3593, STA/DWDS mode
* AR9380, STA/AP modes
* QCA9880 (athp) - STA/AP modes
ldd proclaims ET_DYN objects as shared libraries and tries to
dlopen(RTLD_TRACE) them to get dependencies. Since PIE binaries are
ET_DYN | DF_1_PIE, refusal to dlopen such binaries breaks ldd.
Fix it by reading and parsing dynamic segment looking for DF_FLAG_1
and taking DF_1_PIE into account when deciding between binary and
library.
Reported by: Dewayne Geraghty <dewayne@heuristicsystems.com.au>
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D25257
Current logic of using user's locale encoding that is UTF-8 doesn't make
much sense if we already failed the looks_utf8() check and skipped
encoding set using "fileencoding" as being UTF-8 as well; fallback to
ISO8859-1 in that case.
Reviewed by: Zhihao Yuan <lichray@gmail.com>
Differential Revision: https://reviews.freebsd.org/D24919
-V is OpenBSD specific, use -version instead.
While here, fix issue reported by mandoc lint and drop nonexistent
script(7) reference.
PR: 247004
Reviewed by: 0mp, markj
Differential Revision: https://reviews.freebsd.org/D25164
Update sqlite3 to 3.32.2 (3320200).
CVE-2020-11655: SQLite through 3.31.1 allows attackers to cause a denial of
service (segmentation fault) via a malformed window-function query because
the AggInfo object's initialization is mishandled.
CVE-2020-13434: SQLite through 3.32.0 has an integer overflow in
sqlite3_str_vappendf in printf.c.
CVE-2020-13435: SQLite through 3.32.0 has a segmentation fault in
sqlite3ExprCodeTarget in expr.c.
CVE-2020-13630: ext/fts3/fts3.c in SQLite before 3.32.0 has a
use-after-free in fts3EvalNextRow, related to the snippet feature
CVE-2020-13631: SQLite before 3.32.0 allows a virtual table to be renamed
to the name of one of its shadow tables, related to alter.c and build.c.
CVE-2020-13632: ext/fts3/fts3_snippet.c in SQLite before 3.32.0 ha s a
NULL pointer dereference via a crafted matchinfo() query.
PR: 247149
Reported by: spam123@bitbert.com
MFC after: 3 days
Security: vuxml: c4ac9c79-ab37-11ea-8b5e-b42e99a1b9c3
https://nvd.nist.gov/vuln/detail/CVE-2020-11655https://nvd.nist.gov/vuln/detail/CVE-2020-13434https://nvd.nist.gov/vuln/detail/CVE-2020-13435https://nvd.nist.gov/vuln/detail/CVE-2020-13630https://nvd.nist.gov/vuln/detail/CVE-2020-13631https://nvd.nist.gov/vuln/detail/CVE-2020-13632
It's a useful debug aid for anyone using Ctrl-T today, and doesn't seem to be
widely known. So, enable it out of the box to help people find it.
It's a tunable and sysctl, so if you don't like it, it's easy to disable
locally.
If people really hate it, we can always flip it back.
Reported by: Daniel O'Connor
making them break when the representation changes. Revert changes that
eliminated the color field from rb-trees, leaving everything as it was
before.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D25250
Allow net80211 drivers to register a small vtable of debugnet-related
methods.
This is not a functional change. Driver support is needed, similar to
debugnet(4) for wired NICs.
Reviewed by: adrian, markj (earlier version both)
Differential Revision: https://reviews.freebsd.org/D17308
Hide C-only declarations under #ifndef LOCORE. This will be used by
future changes to define ELF notes in assembly.
Reviewed by: kib
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25211
This will be used by future changes to define ELF notes in assembly.
Reviewed by: kib
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25211
- Make use of cursors to avoid data copies for AES-CCM and AES-GCM.
Pass pointers into the request's input and/or output buffers
directly to the Update, encrypt, and decrypt hooks rather than
always copying all data into a temporary block buffer on the stack.
- Move handling for partial final blocks out of the main loop.
This removes branches from the main loop and permits using
encrypt/decrypt_last which avoids a memset to clear the rest of the
block on the stack.
- Shrink the on-stack buffers to assume AES block sizes and CCM/GCM
tag lengths.
- For AAD data, pass larger chunks to axf->Update. CCM can take each
AAD segment in a single call. GMAC can take multiple blocks at a
time.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D25058
Rtld itself is a shared object which does not have vendor note, so
after the direct exec of ld-elf.so.1 process has p_osrel set to zero.
This affects the ABI of syscalls.
Set osrel to the __FreeBSD_version value at compile time right after
rtld identified direct exec mode. Then, switch to the osrel read from
the binary note or zero if no note, right before starting calling
ifunc resolvers, which is the first byte of the user code.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
The loader.ve.hashed list can easily exceed KENV_MVALLEN.
If so, bump kenv_mvallen to a multiple of KENV_MVALLEN to
accommodate the value.
Reviewed by: stevek
MFC after: 1 week
The amount to copy for the first block is the minimum of the size of
the AAD region or the remaining space in the first block.
Reported by: cryptocheck -z
MFC after: 2 weeks
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D25140
- Clear the current thread's TLS pointer on exec. Previously the TLS
pointer (and register) remain unchanged.
- Explicitly clear the TLS pointer when new threads are created.
- Make md_tls_tcb_offset per-process instead of per-thread.
The layout of the TLS and TCB are identical for all threads in a
process, it is only the TLS pointer values themselves that vary by
thread. This also makes setting md_tls_tcb_offset in
cpu_set_user_tls() redundant with the setting in exec_setregs(), so
only set it in exec_setregs().
Submitted by: Alfredo Mazzinghi (1)
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24957
The Intel Instruction Set Reference says this about the XSAVE instruction:
Use of a destination operand not aligned to 64-byte boundary
(in either 64-bit or 32-bit modes) results in a general-protection
(#GP) exception.
This alignment happens naturally when all malloc buckets are powers
of two. However, this change is necessary on some systems when
certain non-power-of-two (and non-multiple of 64) malloc buckets
are defined.
Reviewed by: cem; kib; earlier version by jhb
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D25098
In particular, uma_zcreate creates sysctl oids, which locks an sx lock,
which uses IPIs under contention. IPIs tend not to work very well
when interrupts are disabled. Who knew, right?
Reviewed by: cem kib
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D25098
always want to do a window update, even when no data can be sent. Now in
cases where you are not pacing thats probably ok, you just send an extra
window update or two. However with bbr (and rack if its paced) every time
the pacer goes off its going to send a "window update".
Also in testing bbr I have found that if we are not responding to
data right away we end up staying in startup but incorrectly holding
a pacing gain of 192 (a loss). This is because the idle window code
does not restict itself to only work with PROBE_BW. In all other
states you dont want it doing a PROBE_BW state change.
Sponsored by: Netflix Inc.
Differential Revision: https://reviews.freebsd.org/D25247
Given that 64c/128t CPUs are currently available, and that many
devices (nvme, many NICs) desire to map 1 MSI-X vector per core,
or even 1 per-thread, it is becoming far easier to see MSI-X interrupt
setup fail due to msi vector exhaustion, and devices fail to attach at
boot on large system.
This bump costs 12KB on amd64 (and 6KB on i386), which seems
worth the trade off for a better out of the box experience on
high end hardware.
Reviewed by: jhb
MFC after: 21 days
Sponsored by: Netflix
libc cannot assume that aligned_alloc and free come from jemalloc, or that
any application providing its own malloc and free is actually providing
aligned_alloc.
Switch back to malloc and just make sure we're passing a properly aligned
stack into rfork_thread, as an application perhaps can't reasonably replace
just malloc or just free without headaches.
This unbreaks ksh93 after r361996, which provides malloc/free but no
aligned_alloc.
Reported by: freqlabs
Diagnosed by: Andrew Gierth <andrew_tao173.riddles.org.uk>
X-MFC-With: r361996
RB_LEFT or RB_RIGHT, so they aren't stripping off the color bit
encoded there. Strip off that bit for linuxkpi.
Reported by: dch
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D25245
the debug messages. While here, clean up some variable naming.
Reviewed by: bcr (manpages), emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25230
